SI4702-B16-GM Silicon Laboratories Inc, SI4702-B16-GM Datasheet - Page 15

• Manufacturer Part Number: SI4702-B16-GM
• Description: IC FM RADIO TUNER 20QFN
• Manufacturer: Silicon Laboratories Inc

Specifications of SI4702-B16-GM

• Frequency: 76MHz ~ 108MHz
• Sensitivity: -99dBm
• Modulation Or Protocol: FM
• Applications: Cellular, MP3, PDAs, Portable Radios
• Current - Receiving: 18mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 20-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Memory Size: -
• Data Rate - Maximum: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 336-1333-1

4. Functional Description
4.1. Overview
The
Si4700/01 FM tuner family, and further increases the
ease and attractiveness of adding FM radio reception to
mobile devices through small size and board area,
minimum component count, flexible programmability,
and superior, proven performance. Si4702/03-C19
software is backwards compatible to existing Si4700/01
and
Si4702/03-C19 benefits from proven digital integration
and 100% CMOS process technology, resulting in a
completely integrated solution. It is the industry's
smallest footprint FM tuner IC requiring only 10 mm
board space and one external bypass capacitor.
The device offers significant programmability, and
caters to the subjective nature of FM listeners and
variable
through a simplified programming interface and mature
functionality.
The Si4703-C incorporates a digital processor for the
European Radio Data System (RDS) and the US Radio
Broadcast Data System (RBDS) including all required
symbol
detection, and error correction functions.
RDS enables data such as station identification and
song name to be displayed to the user. The Si4703-C
offers a detailed RDS view and a standard view,
allowing adopters to selectively choose granularity of
RDS status, data, and block errors. Si4703-C software
is backwards compatible to the proven Si4701, adopted
Si4702/03-C19
Si4702/03-B16
decoding,
FM
Headphone
32.768 kHz
2.7 - 5.5 V
Cable
broadcast
RFGND
RCLK
FMIP
block
VD
extends
VA
FM
Figure 7. Si4702/03-C19 FM Receiver Block Diagram
environments
LNA
TUNE
AGC
REG
Tuner
synchronization,
Silicon
XTAL
0 / 90
OSC
designs.
Laboratories
world-wide
PGA
AFC
error
The
Rev. 1.1
2
ADC
ADC
by
world-wide.
The Si4702/03-C19 is based on the superior, proven
performance of Silicon Laboratories' Aero architecture
offering unmatched interference rejection and leading
sensitivity. The device uses the same programming
interface
bus-modes. Power management is also simplified with
an integrated regulator allowing direct connection to a
2.7 to 5.5 V battery.
The Si4702/03-C19 device’s high level of integration
and complete FM system production testing increases
quality to manufacturers, improves device yields, and
simplifies device manufacturing and final testing.
4.2. FM Receiver
The
architecture
eliminates the need for factory adjustments. The receive
(RX) section integrates a low noise amplifier (LNA)
supporting the worldwide FM broadcast band (76 to
108 MHz). An automatic gain control (AGC) circuit
controls the gain of the LNA to optimize sensitivity and
rejection of strong interferers. For testing purposes, the
AGC can be disabled with the AGCD bit. Refer to
Section 6. "Register Descriptions" on page 23 for
additional programming and configuration information.
The Si4702/03-C19 architecture and antenna design
increases system performance. To ensure proper
performance and operation, designers should refer to
the guidelines in "AN231: Si4700/01/02/03 Headphone
Q
I
leading
DEMOD
(Si4703)
LOW-IF
FILTER
AUDIO
Si4702/03-C19’s
RSSI
MPX
DSP
RDS
Si4702/03
as
reduces
cell-phone
the
GPIO
DAC
DAC
Si4701
Si4702/03-C19
external
ROUT
LOUT
SCLK
GPIO
SDIO
RST
SEN
VIO
and
patented
and
MP3
components
supports
digital
manufacturers
multiple
low-IF
and
15